I agree that "论坛的激励缺乏效率...", at least as far as the Promotion Rule is concerned. It is just a waist of time and net resource......
If you learn Industry Organization, you should know there are some models about "Network Economics". The more people on the network, the better efficiency the network will be.
Of course, knowledge should not be free. But we can work out some other creative proper way to be win-win.....
For the purpose of this platform, to encouraging the discussion and learning atmosphere, I think that we should encourage members to upload useful document or disclose meaningful pages to earn more bonus......